WO2003098286A1 - Appareil de fabrication d'affichage et procede de fabrication d'affichage - Google Patents

Appareil de fabrication d'affichage et procede de fabrication d'affichage Download PDF

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Publication number
WO2003098286A1
WO2003098286A1 PCT/JP2003/006167 JP0306167W WO03098286A1 WO 2003098286 A1 WO2003098286 A1 WO 2003098286A1 JP 0306167 W JP0306167 W JP 0306167W WO 03098286 A1 WO03098286 A1 WO 03098286A1
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WO
WIPO (PCT)
Prior art keywords
liquid material
amount
pressure chamber
droplet
expansion
Prior art date
Application number
PCT/JP2003/006167
Other languages
English (en)
Japanese (ja)
Inventor
Tomoaki Takahashi
Hirofumi Sakai
Original Assignee
Seiko Epson Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seiko Epson Corporation filed Critical Seiko Epson Corporation
Priority to KR1020037014332A priority Critical patent/KR100569691B1/ko
Publication of WO2003098286A1 publication Critical patent/WO2003098286A1/fr

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/0456—Control methods or devices therefor, e.g. driver circuits, control circuits detecting drop size, volume or weight
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04581—Control methods or devices therefor, e.g. driver circuits, control circuits controlling heads based on piezoelectric elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04588—Control methods or devices therefor, e.g. driver circuits, control circuits using a specific waveform
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04593—Dot-size modulation by changing the size of the drop
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
    • B41J29/393—Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/09—Ink jet technology used for manufacturing optical filters

Definitions

  • an ejection head for example, an ink jet head
  • a liquid material discharged from a nozzle opening is injected into a plurality of pixel regions provided on the surface of the base.
  • color unevenness or defective color may occur in the pixel region due to a characteristic variation between nozzle openings.
  • Patent Literature 1 proposes a technique for repairing a defect by ejecting an ink droplet of a predetermined color to an uneven color portion or a color missing portion of a color filter.
  • FIG. 1A and 1B are diagrams illustrating an example of a display manufacturing apparatus.
  • FIG. 1A is a plan view of the manufacturing apparatus
  • FIG. 1B is a partially enlarged view of a color filter.
  • FIG. 9 shows the change in the ejection characteristics when the drive voltage was adjusted in the standard drive pulse, (a) shows the change in the flying speed of the droplet when the drive voltage was changed, and (b) shows the change in the flight speed.
  • FIG. 7 is a diagram illustrating a change in the weight of a droplet when a driving voltage is changed.
  • Figure 11 (a) shows the relationship between the drive voltage and the time width of the expansion element and the weight of the droplet when the flight speed of the droplet is set to 7 m / s in the standard drive pulse. b) is a diagram showing the relationship between the drive voltage, the time width of the expansion element, and the flying speed of the droplet when the weight of the droplet is set to 15 ng.
  • FIG. 16 shows the change in the ejection characteristics when the drive voltage was adjusted with the micro drive pulse.
  • A shows the change in the flight speed of the droplet when the drive voltage was changed.
  • B shows the change in the weight of a droplet when the drive voltage is changed.
  • Figure 17 (a) shows the relationship between the drive voltage and the intermediate potential and the weight of the droplet when the flight speed of the droplet is set to 7 m / s in the micro drive pulse.
  • FIG. 9 is a diagram showing the relationship between the driving voltage and the intermediate potential and the flying speed of a droplet when the weight of the droplet is set to 5.5 ng.
  • FIG. 19 is a flowchart illustrating a color filter manufacturing process.
  • FIG. 23 is a schematic diagram illustrating an excimer laser light source.
  • FIG. 24 is a cross-sectional view of a principal part showing a schematic configuration of a liquid crystal device using a color filter to which the present invention is applied.
  • FIG. 25 is a cross-sectional view of a principal part showing a schematic configuration of a liquid crystal device of a second example using a color filter to which the present invention is applied.
  • FIG. 26 is a cross-sectional view of a principal part showing a schematic configuration of a liquid crystal device of a third example using a color filter to which the present invention is applied.
  • FIG. 28 is a flowchart illustrating a manufacturing process of the display device according to the second embodiment.
  • FIG. 29 is a process chart illustrating the formation of the inorganic bank layer.
  • the driving pulse causes the meniscus to increase toward the pressure chamber side.
  • a second expansion element for rapidly expanding a pressure chamber having a steady volume to retract, and a second discharge element for discharging the central portion of the meniscus drawn by the second expansion element into a droplet by contracting the pressure chamber.
  • a second drive pulse including
  • the mounting base 3 is a substantially rectangular plate-shaped member in which the mounting surface 3a is constituted by a light reflecting surface.
  • the size of the mounting base 3 is defined based on the size of the filter base 2, and is set at least one size larger than the filter base 2 '.
  • the guide bar 4 is a flat rod-shaped member, and is installed in parallel with the short side direction of the mounting base 3 (Y axis, corresponding to the sub-scanning direction). (Equivalent to the main scanning direction).
  • the nozzle plate 45 is a thin stainless steel plate in which a plurality of nozzle openings 25 are formed in rows at a pitch corresponding to the dot formation density.
  • 48 nozzle openings 25 are arranged in rows with a pitch of 90 dpi, and these nozzle openings 25 constitute a nozzle array.
  • the ejection data latched by the latch circuits 63 and 64 is input to the decoder 65.
  • the decoder 65 functions as pulse selection data generation means, and generates 2-bit pulse selection data by translating 2-bit ejection data.
  • the drive signal generator 32 As shown in FIGS. 7 and 14, the drive signal generator 32 generates a drive signal in which three drive pulses (PS 1 to PS 3 and PS 4 to PS 6) are included in the ejection period T.
  • the decoder 65 generates 3-bit pulse selection data.
  • the pulse selection data [00] is generated by translating the ejection data [00] that does not discharge droplets, and the pulse selection data [0 1] is translated by translating the ejection data [01] that discharges a small amount of droplets. 0].
  • the pulse selection data [101] is generated, and the ejection data [1 1] for ejecting a large amount of droplets is translated.
  • the amount of liquid material is represented by weight (ng), and the control by weight is described. However, it is needless to say that the control may be performed by volume (pL).
  • the ejection control of the droplet is performed based on the pulse selection data. That is, when the pulse selection data is [000], the first generation period Tl corresponding to the first standard drive pulse PS1, the second generation period ⁇ 2 corresponding to the second standard drive pulse PS2, and In any of the third generation periods # 3 corresponding to the third standard drive pulse PS3, the switch circuit 68 is in the OFF state. Therefore, none of the standard drive pulses PS 1 to PS 3 is supplied to the piezoelectric vibrator 21. Then, when the pulse selection data is [0 10], the switch circuit 68 is turned on in the second generation period T2, and in the first generation period Tl and the third generation period ⁇ 3, The switch circuit 68 is turned off.
  • the switch circuit 68 When the pulse selection data is [101], the switch circuit 68 is turned on in the first generation period Tl and in the third generation period ⁇ 3, and in the second generation period T2. 68 becomes the OFF state. For this reason, A first standard drive pulse PS 1 and a third standard drive pulse / PS 3 are supplied to the piezoelectric vibrator 21. Similarly, when the pulse selection data is [1 1 1], the switch circuit 68 is turned on in each period of the first generation period T1 to the third generation period T3, and the piezoelectric vibrator 21 has Each of the standard drive pulses PS1 to PS3 is supplied.
  • the amount of the droplet to be discharged can be changed by changing the type of the driving pulse.
  • a predetermined amount for example, 5.5 ng
  • These micro drive pulses P S4 to P S6 are a kind of the second drive pulse of the present invention, and all are constituted by pulse signals having the same waveform shape. For example, as shown in FIG.
  • the discharge hold element ⁇ 14 and the contraction damping element ⁇ 15 are sequentially supplied.
  • the supply of the contraction damping element ⁇ 15 causes the pressure chamber 47 to contract from the discharge volume to the minimum volume, but the contraction speed is set to a speed that can suppress the meniscus vibration after the droplet discharge.
  • the damping hold element ⁇ 16 is supplied, so that the contracted state of the pressure chamber 47 is maintained.
  • the expansion damping element # 17 is supplied at a timing when the vibration of the meniscus can be canceled, and the pressure chamber 47 for suppressing the vibration of the meniscus expands and returns to a steady volume.
  • Fig. 9 shows the change in the ejection characteristics of the droplet when the drive voltage is adjusted, (a) shows the change in the flight speed when the drive voltage is changed, and (b) shows the change in the drive voltage. The figure shows the change in weight when is changed.
  • the maximum potential VH was changed without changing the minimum potential VL and the time width of each waveform element (P1 to P5).
  • the intermediate potential VM was changed to correspond to the drive voltage.
  • a solid line with a black circle indicates one main droplet
  • a dotted line with a white circle indicates satellite droplets (droplets flying along with the main droplet).
  • a one-point line with a triangle indicates the second satellite droplet (droplet that flies along with the satellite droplet).
  • the maximum potential V H is the same before and after the change of the intermediate potential VM. Therefore, when the intermediate potential VM is set higher than the reference, the potential difference from the intermediate potential VM to the maximum potential VH is smaller than when the intermediate potential VM is set to the reference intermediate potential VM, and the expansion allowance of the pressure chamber 47 is reduced. .
  • the intermediate potential VM is set lower than the reference, the potential difference from the intermediate potential VM to the maximum potential VH becomes larger than when the intermediate potential VM is set to the reference intermediate potential VM, and the expansion allowance of the pressure chamber 47 increases. .
  • This expansion allowance defines the amount of liquid material flowing into the pressure chamber 47. That is, if the expansion allowance is larger than the standard, the amount of the liquid droplet flowing into the pressure chamber 47 from the common liquid chamber 48 becomes larger than the standard amount. The amount of droplets flowing into the pressure chamber 47 becomes smaller than the reference amount.
  • the time width (supply time) of the expansion element P1 becomes the same before and after the change of the intermediate potential VM. For this reason, the intermediate potential V When M is set high, when the expansion element P 1 is supplied to the piezoelectric vibrator 21, the expansion speed of the pressure chamber 47 decreases. On the other hand, when the intermediate potential VM is set lower than the reference, the expansion speed of the pressure chamber 47 increases.
  • the expansion allowance of the pressure chamber 47 affects the liquid material pressure (liquid pressure) in the pressure chamber 47 immediately after the supply of the expansion element P1. That is, as the expansion allowance is smaller than the standard, the liquid pressure in the pressure chamber 47 becomes closer to the steady state pressure immediately after the supply of the expansion element P1, so that the inflow amount of the liquid material becomes smaller than the standard. The inflow speed also slows. As a result, the pressure fluctuation of the liquid material in the pressure chamber 47 becomes relatively small. Conversely, if the expansion allowance is larger than the standard, the liquid pressure in the pressure chamber 47 immediately drops immediately after the supply of the expansion element P1. Therefore, the inflow rate of the liquid material increases and the inflow speed increases, and the pressure fluctuation of the liquid material in the pressure chamber 47 increases.
  • the driving voltage is set to 31.5 V and the intermediate potential VM is set to 20% of the driving voltage (that is, It can be seen that setting each to (potential 6.3 V higher than potential VL) can discharge about 16.5 ng of droplets.
  • the driving voltage is set to 29. 7 V and the intermediate potential VM is set to 40% of the driving voltage, it can be seen that approximately 15.3 ng of droplets can be ejected.
  • the driving voltage is set to 28.0 V and the intermediate potential VM is set to 60 ° / 0 of the driving voltage, it can be seen that droplets of about 13.6 ng can be ejected.
  • the relationship between the driving voltage and the intermediate potential VM and the flight speed of the droplet is as shown in FIG. 10 (b).
  • the drive voltage is set to 29.2 V and the intermediate potential VM is set to 20% of the drive voltage (that is, 5.9 V higher than the minimum potential VL)
  • the liquid It can be seen that the flight speed of the drops can be set to about 6. lm / s.
  • the driving voltage is set to 29. OV and the intermediate potential VM is set to 40% of the driving voltage, it can be seen that the flying speed of the droplet can be set to about 6.8 / s.
  • the drive voltage is set to 30.6 V and the intermediate potential VM is set to 60% of the drive voltage, it can be seen that the flight speed of the droplet can be set to about 8.lm / s.
  • the time width of the expansion element P1 defines the expansion rate of the pressure chamber 47 from the steady volume to the maximum volume. Then, irrespective of the time width of the expansion element P1, if the start potential of the expansion element P1 is set to the intermediate potential VM and the end potential is set to the maximum potential VH, the expansion width of the expansion element P1 is set shorter than the reference. The gradient of P1 becomes steeper, and the expansion rate of the pressure chamber 47 becomes faster than the reference. On the other hand, if the time width is set longer than the reference, the inclination of the expansion element P1 becomes gentler, and the expansion speed of the pressure chamber 47 becomes lower than the reference. This difference in the expansion rate affects the liquid pressure in the pressure chamber 47 immediately after the supply of the expansion element P1.
  • the expansion speed is lower than the reference, the fluctuation of the liquid pressure becomes small immediately after the supply of the expansion element P1, and the flow speed of the liquid material into the pressure chamber 47 also becomes low.
  • the expansion rate is higher than the standard, the liquid pressure in the pressure chamber 4'7 drops significantly immediately after the supply of the expansion element P1, and the pressure oscillation increases, and The inflow speed into the pressure chamber 47 also increases.
  • (b) shows that if the drive voltage is set to 26.8 V and the time width of the expansion element P1 is set to 2.5 s, the flight speed of the droplet can be set to about 6.7 mZ s. . Also, if the drive voltage is set to 27.8 V and the time width of the expansion element P 1 is set to 3.5 ⁇ s, it can be seen that the flight speed of the droplet can be set to about 6.3 mZs. Furthermore, if the drive voltage is set to 31.7 V and the time width of the expansion element P1 is set to 6.5 ⁇ s, it can be seen that the flight speed of the droplet can be set to about 10.8 m / s .
  • the magnitude of the driving voltage and the flying speed and weight of the droplet are in direct proportion to each other (the coefficient is positive). That is, when the driving voltage is increased, the flying speed of the droplet (main droplet) increases, and the weight of the droplet increases.
  • the driving voltage is 18V
  • the flight speed of the main droplet is about 4 ms
  • the weight is about 4.4 ng.
  • the driving voltage is 24 V
  • the flight speed is about 9. OmZs and the weight is about 6.8 ng.
  • the driving voltage is 33V
  • the flight speed is about 16mZs, and the weight is about 10.2ng.
  • the drive voltage and the intermediate potential VM it is possible to change the ejection amount of the droplet while keeping the flight speed of the droplet constant.
  • the flight speed of the droplet is set to 7 mZ s
  • the relationship between the driving voltage and the intermediate potential VM and the weight of the droplet is as shown in FIG. 17 (a). From Fig. 17 (a), when the drive voltage is set to 19.5 V and the intermediate potential VM is set to 0% of the drive voltage (that is, the same potential as the minimum potential VL), a droplet of about 5.6 ng is obtained. It can be seen that can be discharged.
  • the dynamic voltage is set to 22.5 V and the intermediate potential VM is set to 3.0% of the drive voltage, it can be seen that about 5.9 ng of droplets can be ejected.
  • the drive voltage is set to 24.5 V and the intermediate potential VM is set to 50% of the drive voltage, it can be seen that approximately 7.5 ng of droplets can be ejected.
  • the drive voltage and the intermediate potential VM it is possible to change the flight speed of the droplet while keeping the ejection amount of the droplet constant.
  • the weight of the droplet is set to 5.5 ng
  • the relationship between the driving voltage and the intermediate potential VM and the flight speed of the droplet is as shown in Fig. 17 (b). From Fig. 17 (b), it can be seen that when the driving voltage is set to 19.0 V and the intermediate potential VM is set to 0% of the driving voltage, the flight speed of the droplet can be set to about 6.9 mZ s.
  • the above discharge potential VF defines the discharge volume of the pressure chamber 47 (the volume at the end of the supply of the second discharge element P13). Therefore, the contraction amount from the maximum volume to the discharge volume can be set by changing the discharge potential VF. Further, since the time width of the second ejection element P13 is constant, the contraction speed also changes by changing the ejection potential VF. That is, when the discharge potential VF is set lower than the reference, the contraction speed increases, and when the discharge potential VF is set higher than the reference, the contraction speed decreases.
  • the relationship between the driving voltage and the ejection potential VF and the flying speed of the droplet is as shown in FIG. 18 (b).
  • the flying speed of the droplet is about 11.2 m You can see that it can be set to / s. If the drive voltage is set to 19.5 V and the potential difference of the second ejection element P 13 is set to 70% of the drive voltage, the flying speed of the droplet can be set to about 5.5 m / s. I understand. Further, it can be seen that when the drive voltage is set to 12.0 V and the potential difference of the second ejection element P 13 is set to 100% of the drive voltage, the flight speed of the droplet can be set to about 3.0 / s.
  • the flight speed of the droplets can be set, so that droplets of different volumes can be flown at the same speed. This makes it possible to align the landing positions of the droplets while keeping the scanning speed of the ejection head 7 constant. Therefore, the landing position of the droplet can be accurately controlled without performing complicated control.
  • the above-described filter substrate 2 is obtained through the above black matrix formation step and bank formation step.
  • the protective film 77 is formed through a drying process.
  • the carriage motor 6 operates to move the guide bar 4 in the main scanning direction (X-axis direction), and in synchronization with the movement of the guide bar 4, ink of a predetermined color is ejected from the nozzle opening 25 of the ejection head 7. Drops are ejected.
  • the determination of the landing ink amount is performed for all the pixel areas 12a. That is, when the landing ink amount for one pixel region 12a is detected, the landing ink amount for the next pixel region 12 is detected. Then, when the landing ink amounts are detected for all the pixel areas 12a, the process is terminated.
  • the acquired landing ink amounts are stored in the RAM (landing liquid material amount storage means, not shown) of the main control unit 31 in a state where the landing ink amounts are associated with the position information of the pixel area 12a.
  • the ejection head 7 is positioned on the pixel area 12 a where the amount of the landing ink is insufficient with respect to the target amount of ink.
  • a driving pulse having a shape (for example, microphone opening driving pulses PS 4 to PS 6) is supplied to the piezoelectric vibrator 21, and the pixel region 12 a is refilled with ink.
  • the main control section 31 reads out the shortage amount information from the RAM and recognizes the pixel area 12a that needs ink replenishment.
  • a drive pulse for discharging a shortage amount is set for the pixel region 12a that needs replenishment. That is, waveform information is set.
  • the set waveform information is stored in the RAM (corresponding to a supplementary pulse setting information storage means, not shown) of the main controller 31 as supplementary pulse setting information in a state associated with the position information of the pixel area 12a. Is stored.
  • the main control unit 31 controls the replenishment of the ink. That is, the carriage motor 6 is controlled to position the ejection head 7 on the pixel area 12a to be supplemented. Then, waveform information (supplementary pulse setting information) is output to the drive signal generation section 32, and an insufficient amount of droplets is ejected to land on the pixel area 12a.
  • the designed value of the landing ink amount is set as the target ink amount, and when the amount of ink that exceeds the design value lands, the coloring component decomposition means is activated according to the excess amount, and the excess ink (coloring component) May be decomposed.
  • the coloring component decomposition means is activated according to the excess amount, and the excess ink (coloring component) May be decomposed.
  • this application step includes a liquid material discharge step (S 11), an impact amount detection step (S 12), a correction amount acquisition step (S 13 ′), and a liquid material It comprises a replenishment step (S14) and a liquid material decomposition step (S15), and these steps are performed in order.
  • a predetermined amount of ink droplets of a predetermined color are ejected into each pixel region 12a on the substrate 11. This step is performed in the same manner as in the above example.
  • Correction amount acquisition step (In S 13, the landing ink amount for each pixel area 12 a detected in the above-described landing amount detection step is calculated as the target ink amount for the pixel area 12 a (the target liquid material amount of the present invention).
  • the difference between the landed ink amount and the target ink amount is obtained as a correction amount, where the target ink amount in this example is a design value of the landed ink amount. It is stored in RAM (corresponding to target ink amount storage means, not shown).
  • the liquid material replenishment step (S 4) is the same as the above example, and the state in which the ejection head 7 is positioned on the pixel area 12 a where the landing ink amount is insufficient with respect to the target ink amount. Then, a drive pulse having a waveform shape corresponding to the shortage is supplied to the piezoelectric vibrator 21 and the pixel is Refill the area 1 2a with ink.
  • the laser light emitting element 18 and the laser may be scanned simultaneously by arranging the laser light-receiving element 19 so as to sandwich the display substrate (the filter substrate 21 in FIG. 38).
  • the laser beam Lb is appropriately reflected by a prism or the like, the laser beam Lb from the laser light emitting element 18 is irradiated on the pixel area 12a, and the laser beam Lb after transmitting through the pixel area 12a is received by the laser light receiving element. You may be guided to 19 (you may make it incident).
  • the liquid material amount detecting means may be constituted by a CCD array 140.
  • the mounting surface 3a of the mounting base 3 is formed of, for example, a surface light emitter so that light can be emitted with a uniform light amount.
  • a CCD array 140 is provided on the surface of the guide bar 4 facing the mounting base 3, and the light transmitted through the pixel area 12a is received to detect the amount of ink landing.
  • the resolution of the CCD array 140 is preferably higher (finer) than the size of the elementary region 12a from the viewpoint of improving detection accuracy.
  • the electromechanical transducer is not limited to the piezoelectric vibrator 21 described above, but may be constituted by a magnetostrictive element or an electrostatic actuator.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Coating Apparatus (AREA)
  • Optical Filters (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Electroluminescent Light Sources (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Gas-Filled Discharge Tubes (AREA)
  • Nozzles (AREA)

Abstract

L'invention concerne un chariot (5) comprenant une tête (7) d'injection servant à décharger une gouttelette en fonction d'une impulsion de commande transmise à la tête (7) d'injection, et un capteur (17) de matériau liquide destiné à détecter la quantité d'encre reçue sur chaque zone de pixel d'un substrat filtrant. Une unité de commande principale (31) détermine, en fonction du niveau d'un signal de détection du capteur (17) de matériau liquide, une impulsion de commande en forme d'onde permettant à une quantité désirée de gouttelettes d'être déchargées, puis transmet les informations de forme d'onde de l'impulsion de commande déterminée à une unité (32) de génération de signaux de commande. L'unité (32) de génération de signaux de commande génère, en fonction des informations de forme d'onde reçues, une impulsion de commande et la transmet à la tête (7) d'injection. La tête (7) d'injection injecte la quantité désirée de gouttelettes dans la zone de pixel correspondante, la quantité d'encre de la zone de pixel correspondante étant alors ajustée selon une quantité cible.
PCT/JP2003/006167 2002-05-17 2003-05-16 Appareil de fabrication d'affichage et procede de fabrication d'affichage WO2003098286A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020037014332A KR100569691B1 (ko) 2002-05-17 2003-05-16 디스플레이 제조 장치 및 디스플레이 제조 방법

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2002-142339 2002-05-17
JP2002142339 2002-05-17
JP2003133227A JP4200810B2 (ja) 2002-05-17 2003-05-12 ディスプレー製造装置、及び、ディスプレー製造方法
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